/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [https://neo4j.com]
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.neo4j.cypher.internal.rewriting.rewriters

import org.neo4j.cypher.internal.ast.IsNotTyped
import org.neo4j.cypher.internal.ast.IsTyped
import org.neo4j.cypher.internal.ast.semantics.SemanticState
import org.neo4j.cypher.internal.rewriting.rewriters.factories.ASTRewriterFactory
import org.neo4j.cypher.internal.util.AnonymousVariableNameGenerator
import org.neo4j.cypher.internal.util.CancellationChecker
import org.neo4j.cypher.internal.util.CypherExceptionFactory
import org.neo4j.cypher.internal.util.Rewriter
import org.neo4j.cypher.internal.util.StepSequencer
import org.neo4j.cypher.internal.util.StepSequencer.DefaultPostCondition
import org.neo4j.cypher.internal.util.symbols.CypherType
import org.neo4j.cypher.internal.util.symbols.ParameterTypeInfo
import org.neo4j.cypher.internal.util.topDown

case object cypherTypeNormalizationRewriter extends StepSequencer.Step with DefaultPostCondition
    with ASTRewriterFactory {

  override def getRewriter(
    semanticState: SemanticState,
    parameterTypeMapping: Map[String, ParameterTypeInfo],
    cypherExceptionFactory: CypherExceptionFactory,
    anonymousVariableNameGenerator: AnonymousVariableNameGenerator,
    cancellationChecker: CancellationChecker
  ): Rewriter = instance

  override def preConditions: Set[StepSequencer.Condition] = Set()

  override def invalidatedConditions: Set[StepSequencer.Condition] = Set()

  val instance: Rewriter = topDown(Rewriter.lift {
    case isTyped @ IsTyped(_, cypherType: CypherType) =>
      isTyped.copyAndKeepMeta(typeName = CypherType.normalizeTypes(cypherType))
    case isNotTyped @ IsNotTyped(_, cypherType: CypherType) =>
      isNotTyped.copyAndKeepMeta(typeName = CypherType.normalizeTypes(cypherType))
  })

}
